A7X has heavier shit than you think. You must be thinking that Afterlife is as heavy as they get or some shit. Those first 2 albums are much heavier than Godsmack/Disturbed/FFDP/Manson.

And lets not forget Godsmack is playing Uproar, and they played Mayhem last year. Disturbed has also played both. I can see it being this next year. A7X/Manson or Tool/A7X.

I was an A7X fan back in the era before City of Evil was made. I'm not as big of a fan now. Godsmack/Disturbed blur the lines between heavy metal & hard rock. I think A7X is more hard rock, especially since 2008. Not saying they don't have some metal songs or metal moments. They won't play much from their heavier albums in a one hour set. I think A7X & 5FDP will headline Uproar next summer. Unless SoaD, Korn and Rob Zombie each turn down a headlinng slot on Mayhem Fest.

Also I think Tool is a long shot. I hear they ask for more $ than SoaD and that Maynard hates playing on touring festivals like Ozzfest, the old Lollapalooza tours, etc.